Apparatus for heating and utilizing hydrochloric acid.



APPARATUS FOR HEATING AND UTILIZING HYDROCHLORIC ACID.

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T. '0. KING, DEGD. M. H KING, EXEGUTRIX.

APPLICATION IILED SEPT. 21, 1907.

A if? Patented Sept: 10, 1912 2 SHEETS-SHEET 1.

ATTORN T. G. KING, DECD. M. H. 1mm. nxzov'rmx. APPARATUS FOR HEATING AND UTILIZING HYDROGHLORIG ACID.

APPLICATION FILED SEPT. 21, 1907. 1,033,339, Patented Sept. 10,1912.

2 SHEETS-SHEET 2.

WITNESSES.

My invention relatesto improvements in whic reference being had to the accompanying UNITED STATES PATENT OFFICE.

TOM COBB KING, OF EAST ORANGE, NEW JERSEY; MARY H. KING EXEOUTRIX OF SAID TOM COBB KING DECEASED.

Specification ot LettersI'stcnt.

Patented Sept. 10, 1912.

Application tiled September 81, 1807. Serial No. 898,904.

To all whom it may concern:

Be it known that I, TOM Conn Kine, a citizen of the United States, residing at East Orange, in the county of Essex and 5 State of New Jersey, have invented a new and useful Improvement in Apparatus for Heating and Utilizing Hydrochloric Acid, of which improvement the following is a specification.

apparatus for-use in metallurgical operations employing hot hydrochloric acid.

The object of my invention is to produce tin-apparatus for use in SIICltDPel'MJlOIlS in the acid used ma be heated andmaintained in that condition, and, with the materials 'under treatment, agitated during the operation. I accomplish this object by means of the device hereinafter described,

drawings, forming part hereof, in which-- Figurelisasi e tion, of my improved device. 'Fig. 2 is an end elevation, partly in section, of the same. Fi 3 is a section on line 3-3 of Fig. 2. ig. 4. is avsection on line 4 -4 of Fig. 1. Fig. 5 is a fragmenta?, v1 ew of a modification of means of eat-mg thevessel. Fig. 6 is a cross section through 80 resistance tube.

Heretofore, so faras I am aware, it hasin which the acid used con (1 be heated and maintainedin this condition during the operation, and at the..same time be i1nper-- vious to the solventaction of the acid," and this diiliculty was augmented when it was necessary or desirable as in the present mstance to agitate or disturb the acid and materials during the operation in order to produce rapid solution. Metals could not a used in the construction of such apparatus as all the metals, exce ting a few of the rare metals, are more or ess soluble in the presence of acid, and particularly hot acid, the few'metals excepted bein prohibitive on account "of the cost thereo GIasswas only possible in the production of vesselsfor laboratory-practice and vessels made of lazed ware, earthen wareaor irom the fact that the acid was sated by heat externally applied-ftp. the .yessels containing the acid, required avery long time use ..in such operations.

elevation, partly in sec-'- orcelain,

to transmit such heat to the acid, and when so heated it was impossible to regulate the tem erature.

I ave discovered that copper, one of the best conductors of heat, and certain alloys of copper, when com letelvsubmergcd in hot hydrochloric aci an unexposed to air can be employed in the construction of a device to transmit heat to the acid, notwithstanding that if it were subjected to the acid without observin the specified conditions it would be solub e to a very great extent and consequently not a suitable ma.

terialfrom which to construct vessels for This discovery enables me to use a copper tube, or a copper ar for the transmission of heat requisite in such operations, in the construction of a simple and efficient a paratus adapted to treat metallifer'ous bo ies with hot hydrochloric acid and convert the metallic content into a solution on a large and commercial scale.

Referring to said drawings, 1 is a vessel mounted on wheels sup orted on a track or .ways 2, and capable 0 being reciprocated thereon by means of the crank mechanism 3, 'which may be actuated by any suitable power. The'said vessel may be constructed of any suitable materials but is preferably constructed of wood, an rovided with a lining to ofany suitable su stance insoluble in acid, as, for instance, lazed ware, orcelain or earthen ware, an is provide with a cover 4 bolted or otherwise suitably secured thereto. The said cover is provided with a ipe or pipes 5 5, through which the materia s to be treate may be char ed into the vessel, also with a pipe 6, throug 1 which the gases evolved during the operation may be conveyled to some suitable holder (not shown. he contents, and particularly the hydrochloric acid charged into said vessel are heated by heat radiated from the cop er tube 7, or mm a copper bar of suita 1e cross section to produce the requisite resistance, which is in the bottom of said vessel and extends therethrough, the ends being so secured that air is excluded from contact with the acid and the pipe at a point adiacent to theacid contained in the vessel. The ends or said tube projecting from said yessel may be connected to any suitable "steampupply pipe 8,an asbestos gasket 9 being interposed between the vessel and the 'am nut 10, or, as shown in the modification ig. 5, the tube .11 may be filled with any suitable'electrical resistance material 12, as, for instance, coils of German silver wire and the said resistance suitably'insulate from said tube by any insulation which will withstand a high heat as, for instance, asbestos fiber or minera wool, 18. The passage of an electric current through the resistance material generates heat which radiating from the tube heats the contents thereof. Or, a bar of cop er of requisite cross section to produce su cient resistance, maIy be employed.

claim as my invention and desire to secure by Letters Patent:

1. In an apparatus for treatin metalliferous bodies with hot hydrochlorlc acid, the combination of the vessel having a lining proof against hot hydrochloric acid a eat transmitting substance proof against hot hydrochloric acid when submerged therein, and unexposed to the atmosphere, and means to transmit heat through said heat transmitting substance.

2. In an apparatus for treatin mctalhferous bodies with hot h drochloric acid. the combination of a vesse having a lining roof against hot hydrochloric acid, means 0 reciprocate said vessel for the purpose of agitating the hot acid and the metalllferous bodies contained therein, a cop er tube so located in said vessel as to be su merged in the acid contained therein, and unexposed to the atmosphere, and means to transmit heat through said tube to the contents of said vessel.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

TOM COBB KING. -In-the presence of- V a M. D. CULLEN, J. H. Kmo.

co ies of this patent may be obtalnedfir m cents each, by addressing the "Commissioner of Patents,

Washington-,1). 0." 

